Brushing – scrubbing – and general cleaning – Machines – With air blast or suction
Patent
1992-08-13
1994-03-01
Moore, Chris K.
Brushing, scrubbing, and general cleaning
Machines
With air blast or suction
15351, A47L 900
Patent
active
052896129
ABSTRACT:
A noise reduction system is provided for use with an upright vacuum cleaner. The noise reduction system is intended to be used with a rigid filter bag body-type vacuum cleaner wherein a fixed housing and a removable cover cooperate to enclose a cavity. The cavity houses a dirty air inlet which is in communication with a head assembly of a vacuum cleaner. A filter bag is contained within the cavity and cooperates with the dirty air inlet so as to filter exhaust air and retain debris contained therein. A muffler is contained within the cavity and spaced from the dirty air inlet. The muffler cooperates with the housing to form a baffle chamber The muffler defines a plurality of air entrance apertures which allow air to flow from the cavity into the baffle chamber. Both the muffler and the housing have a series of baffles formed generally parallel aligned which are interleaved and juxtaposed when the housing and the muffler cooperate to form the baffle chamber. A series of baffles redirect exhaust air entering the baffle chamber, thereby reducing air flow energy and the associated noise as air exhausted through the exhaust vents to atmosphere.
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Moore Chris K.
Ryobi Motor Products Corporation
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